Matrices
8th - 10th grade
2910 times
Mathematics
75%average accuracy
3 years ago
mkrein
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14 QuestionsShow answers
  • Question 1
    300 seconds
    Q. Add
    answer choices
    11    8
    -4     2
    3     2
    -6    -6
    -3    2
    -4    -6
    10    8
    -6    2
  • Question 2
    300 seconds
    Q. Subtract
    answer choices
    3    -8
    0   -1
    3   -4
    8  -13
    -3   8
    0    1
    3   -8
    -8    1
  • Question 3
    300 seconds
    Q. Find A+B
    answer choices
    8     10
    8      1 
    12     25
    7     1
    10     30
    0     1
    can't add two together because the rows dont match columns
  • Question 4
    300 seconds
    Q. What do w, x, y and z equal in this matrix subtraction?
    answer choices
    w = 13, x = 4, y = 7, z = 23
    w = 13, x = -4, y = 11, z = 23
    w = 13, x = 4, y = 11, z = 23
    w = 13, x = 4, y = 11, z = 17
  • Question 5
    300 seconds
    Q. What do m, n, p and q equal in this scalar matrix multiplication?
    answer choices
    m=8, n=9, p=-4, q=4 
    m=15, n = -45, p=20, q=-5
    m=20, n=-5, p=15, q=-45
    m=-5, n=20, p=-45, q=15
  • Question 6
    60 seconds
    Q. What are the dimensions of this matrix?
    answer choices
    2 x 3
    3 x 2
    6 x 1
    1 x 6
  • Question 7
    300 seconds
    Q. Perform the indicated operation.  If it’s not possible, select Not Possible. 
    answer choices
    7
    -7
    -6
    20
    7 
    -9
    -6
    20
    Not Possible
    7
    -9
    2
    20
  • Question 8
    900 seconds
    Q. find: B*A
    answer choices
    47     30
    9     5
    17     15
    42     35
    10     25
    7     1
    not possible because rows do not match columns
  • Question 9
    900 seconds
    Q. Multiply
    answer choices
    20     15    -10
    30     -5         0
    -20      15     -10
    30     -5          0
    1        8       3
    11     4        5
    20     -15     10
    -30         5        0  
  • Question 10
    180 seconds
    Q. Subtract
    answer choices
    -5
    -8
    3
    10
    -9
    8
    3
    2
    5
    -8
    3
    10
    -5
    8
    3
    2
  • Question 11
    60 seconds
    Q. In Matrix R (pictured) what element is in the second row, third column?
    answer choices
    8
    9.01
    6
    1
  • Question 12
    30 seconds
    Q. What comes first in the order?
    answer choices
    Row
    Column
  • Question 13
    30 seconds
    Q. What must be true in order to ADD two matrices?
    answer choices
    They must be square.
    The dimensions must be equal.
    The determinant can't equal 0.
    The column of the 1st must equal the row of the 2nd.
  • Question 14
    30 seconds
    Q. You can multiply a 2X3 matrix by which matrix?
    answer choices
    2X2
    2X12
    3X12
    2X3
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